Biology and Control of the Sorghum Midge.1 1. Chemical and Cultural Control Studies in West Texas2


Source: Journal of Economic Entomology, Volume 65, Number 3, June 1972 , pp. 851-855(5)

Publisher: Entomological Society of America

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Grain sorghum, Sorghum bicolor (L.) Moench, was first attacked by Contarinia sorghicola (Coquillett) in highly damaging numbers on the High Plains of Texas in 1961. Aerial applications of parathion, toxaphene and a combination of the two applied to sorghum in the mid bloom stage in 1961 resulted in increased yield. Field adult-midge counts, midge emergence from treated heads, and yields indicated the parathion (0.25 lb AI/acre) and toxaphene (1.3 lb AI/acre) combination was superior. Plotting of blooming date against midge damage showed significant damage did not occur to plants blooming prior to mid-August. Neither sorghum variety nor head type influenced the amount of damage.

Chemical control tests in small plots conducted in 1963-64 showed DDT, carbophenothion, parathion, diazinon, and ethion applied twice 4 days apart at 0.5 lb AI/acre gave superior control of high midge populations. Methyl parathion also was effective at this rate, but phytotoxic properties limited its use. Endrin at 0.3 lb AI/acre was effective only under low-population conditions.

Document Type: Research Article

Publication date: June 1, 1972

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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